GMAT Critical Reasoning (CR) | Re: Tanco, a leather manufacturer, uses large quantities of

If the environmental regulations in disposal of waste caused by processing the by-product of KCl are stringent then the move towards KCl from NaCl is not recommend. If the regulations are not stringent , then it is alright to shift to KCl from NaCl.

Thus evaluating option C is important in determining whether a shift would be beneficial. Thus C is not the correct option.
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